Research on Pitch Angle Measurement Method Based on Laser Tracker
Aiming at the problems of weak anti-interference ability and single adaptive scene of the ex-isting pitch angle measurement technology,two measurement methods of pitch angle based on laser tracker are proposed.One is to calculate the pitch angle by the angle of the center of the circle fitted to the mea-surement points,and the other is to calculate the pitch angle by the angle between the straight lines formed by the measurement points.The results show that the measurement effect of method 2 is due to method 1,which has a nonlinearity error of 0.051%,a hysteresis error of 0.019%,a repeatability error of 0.027%,and a total error of 0.061%.